Generally, each department is responsible for their piece of the park. Food and Bev is responsible for restaurant patios, park services will do trash cans, rides is responsible for ride locations, & Aquatics will do the pools. That said, food and bev may contract this work out. While rides, park services & aquatics (operations department) will do this in house. While staff aren't professional pressure washers, they're given training on the equipment and is signed off on. "Other duties as assigned"